%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2010-2015. All Rights Reserved.
%%
%% The contents of this file are subject to the Erlang Public License,
%% Version 1.1, (the "License"); you may not use this file except in
%% compliance with the License. You should have received a copy of the
%% Erlang Public License along with this software. If not, it can be
%% retrieved online at http://www.erlang.org/.
%%
%% Software distributed under the License is distributed on an "AS IS"
%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
%% the License for the specific language governing rights and limitations
%% under the License.
%%
%% %CopyrightEnd%
%%
%%
%% Tests of the server implemented by diameter_stats.erl.
%%
-module(diameter_stats_SUITE).
-export([suite/0,
all/0,
groups/0,
init_per_suite/1,
end_per_suite/1]).
%% testcases
-export([reg/1,
incr/1,
read/1,
sum/1,
flush/1]).
-define(stat, diameter_stats).
%% ===========================================================================
suite() ->
[{timetrap, {seconds, 60}}].
all() ->
[{group, all},
{group, all, [parallel]}].
groups() ->
[{all, [], tc()}].
tc() ->
[reg,
incr,
read,
sum,
flush].
init_per_suite(Config) ->
ok = diameter:start(),
Config.
end_per_suite(_Config) ->
ok = diameter:stop().
%% ===========================================================================
reg(_) ->
Ref = '$1',
true = ?stat:reg(Ref),
false = ?stat:reg(Ref). %% duplicate
incr(_) ->
Ref = '_',
Ctr = x,
false = ?stat:incr(Ctr), %% not registered,
1 = ?stat:incr(Ctr, Ref, 1), %% only pids need register
true = ?stat:reg(Ref),
spawn(fun() ->
true = ?stat:reg(Ref),
2 = ?stat:incr(Ctr, self(), 2)
end),
ok = fold(Ctr, Ref, 3), %% folded
?stat:flush([self(), Ref]).
read(_) ->
Ref = make_ref(),
C1 = {a,b},
C2 = {b,a},
true = ?stat:reg(Ref),
1 = ?stat:incr(C1),
1 = ?stat:incr(C2),
2 = ?stat:incr(C1),
7 = ?stat:incr(C1, Ref, 7),
Self = self(),
[{Ref, [{C1,7}]}, {Self, [{C1,2}, {C2,1}]}]
= ?stat:read([self(), Ref, make_ref()]),
[] = ?stat:read([]),
[] = ?stat:read([make_ref()]),
?stat:flush([self(), Ref, make_ref()]).
sum(_) ->
Ref = make_ref(),
C1 = {a,b},
C2 = {b,a},
true = ?stat:reg(Ref),
1 = ?stat:incr(C1),
1 = ?stat:incr(C2),
2 = ?stat:incr(C2),
7 = ?stat:incr(C1, Ref, 7),
[{Ref, [{C1,8}, {C2,2}]}]
= ?stat:sum([Ref, make_ref()]),
Self = self(),
[{Self, [{C1,1}, {C2,2}]}]
= ?stat:sum([self()]),
[{Ref, [{C1,7}]}, {Self, [{C1,1}, {C2,2}]}]
= ?stat:flush([self(), Ref]).
flush(_) ->
Ref = make_ref(),
Ctr = '_',
true = ?stat:reg(Ref),
1 = ?stat:incr(Ctr),
3 = ?stat:incr(Ctr, self(), 2),
2 = ?stat:incr(Ctr, Ref, 2),
Self = self(),
[{Self, [{Ctr, 3}]}] = ?stat:flush([self()]),
1 = ?stat:incr(Ctr),
[{Ref, [{Ctr, 2}]}] = ?stat:flush([Ref]),
[{Self, [{Ctr, 1}]}] = ?stat:flush([self()]),
[] = ?stat:flush([self(), Ref]).
%% ===========================================================================
%% Keep incremented until a fold results in the specified value.
fold(Ctr, Ref, N) ->
case ?stat:incr(Ctr, Ref, 0) of
N ->
ok;
M when M < N ->
erlang:yield(),
fold(Ctr, Ref, N)
end.
